Estudio del impacto de UGT2B17 y PD-1 en el trasplante alogénico de progenitores hematopoyéticos a partir de donante emparentado HLA idéntico

Santos Carvajal, Nazly
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Study of the impact of UGT2B17 and PD-1 on allogeneic transplantation of hematopoietic progenitors (allo-TPH) from HLA-identical related donor. everal genetic factors can favor the development of graft-versus-host disease (GVHD), despite HLA donor-recipient compatibility; this dissertarion by publications, explores the role of the disparity in the minor histocompatibility antigen (mHag) UGT2B17, the main enzyme involved in the glucuronidation of testosterone and the polymorphisms (SNPs) of Programmed cell-death 1 ( PD-1), a gene encoding co-inhibitory molecules of immune response receptors, capable of modulating the alloreactive capacity to mHag disparities, PD-1 activation triggers the inhibition of T-lymphocyte activation (immunological tolerance), this could translate into a variable incidence of GVHD, overall survival (OS), progression-free survival (PFS) or relapse. The results suggest that, UGT2B17 disparity has a negative impact on HLA-identical donor allo-TPH especially when the donor is male, given that the incidence of severe acute graft-versus-host disease in pairs with UGT2B17 disparity was significantly elevated, resulting in worse overall survival in the group of patients with the UGT2B17 disparity. Additionally, PD-1 genotype plays an important role in the development of graft-versus-host disease in patients undergoing allo-TPH from HLA-identical related donor, as the study detected an increase of the risk of acute graft-versus-host disease grades II to IV in patients who received grafts from donors homozygous for alleles identified as high risk in the multivariate analysis ​
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